Use an expansion formula to find the values of (1005)^2 ?
Answers
Answered by
21
ans is .....................1010025
Attachments:
Answered by
27
we will use the identity (a+b)² = a² + 2ab + b²
(1000+5)² = 1000² + 2 x 1000 x 5 + 5²
= 1000000 +10000 + 25
= 1010025
(1000+5)² = 1000² + 2 x 1000 x 5 + 5²
= 1000000 +10000 + 25
= 1010025
Similar questions